>Ahhh, sorry - have to open my eyes a little more... missed the following
>lines in the log file (many lines between the first and theese one):
>02:27 00:07 SMTP-(000001B4) 421 OURFIREWALLNAME Sorry, unable to contact
>destination SMTP daemon.
>02:27 00:07 SMTP-(000001B4) SMTP_DELIV_FAILED
>02:27 00:07 SMTP-(000001B4) >QUIT
>
>So it is our firewall that confuses the mailserver...

In that case (assuming that there isn't an easy way around the firewall 
issue, such as a configuration change or upgrading it), I would recommend 
adding an entry to the HOSTS file that points to the backup mail 
server.  Normally, using the HOSTS file like this isn't a good thing, but 
it seems that email.dk's primary mailserver may never be reachable (a very 
poor design), so using the HOSTS file in this case is acceptable.

Note that if email.dk changes their backup mailservers, the HOSTS file will 
need to be updated.  But if they really do intentionally have an 
unreachable primary mailserver, they get what they ask for.

                                                    -Scott
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